WhatsApp Inc.
Whatsapp.com
WhatsApp Messenger
WhatsApp
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Section::::History.:2010s: Messaging apps replace IM.

Instant messaging
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WhatsApp
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Section::::Abstract.
Facebook
7529378
Whatsapp
Whatsapp
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Section::::Criticisms and controversies.

Facebook
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What's App
whatsapp messenger
what s app
whatsapp
whatsapp com
whatsapp inc